Rendering Error in Raster and RasterArray
- To: mathgroup at smc.vnet.net
- Subject: [mg31565] Rendering Error in Raster and RasterArray
- From: "David Park" <djmp at earthlink.net>
- Date: Sun, 11 Nov 2001 16:26:09 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Dear MathGroup,
There is a slight but noticable enough to be annoying error in the rendering
of Raster and RasterArray. The error is that the rendering does not fit the
full specified y range but leaves a slight gap. The x range does seem to be
correctly filled.
array = N[Table[(1/9)*Mod[i, j], {i, 10}, {j, 10}]];
Show[Graphics[
{Raster[array, {{0, 0}, {1, 1}}],
Raster[array, {{0, 1}, {1, 2}}],
Raster[array, {{1, 0}, {2, 1}}]}],
AspectRatio -> Automatic];
array = Table[GrayLevel[0.1*Mod[i, j]], {i, 2, 10},
{j, 2, 10}];
Show[Graphics[
{RasterArray[array, {{0, 0}, {1, 1}}],
RasterArray[array, {{0, 1}, {1, 2}}],
RasterArray[array, {{1, 0}, {2, 1}}]}],
AspectRatio -> Automatic];
The same error does not occur in the rendering of rectangles.
Show[Graphics[
{Rectangle[{0, 0}, {1, 1}],
Rectangle[{0, 1}, {1, 2}],
Rectangle[{1, 0}, {2, 1}]}],
AspectRatio -> Automatic];
David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/